Star Wars definately. Been around for much longer. I don't see how these two can be compared because they have nothing in common other than being movies. One uses magic and is set in the present day kind of, and the other uses futuristic technology that we supposedly had a long time ago in a galaxy far far away.
I don't really think this comparison is fair since Harry Potter has an army of Books behind it. Star Wars started out as a movie, Harry Potter didn't. So if you mean which story I preffer then I would say Harry Potter, if you asked me which movie I prefferd I would say Star Wars.
Hmmm. This is quite the choice. Harry Potter books are superb, but the movies kinda trashed up the story so the people who watch might be misinformed. The Star Wars movies are all superb but if they make 4-6 newly made, this would be the clear winner. I would say Star Wars for its excellent Special effects